content: /**
   * Copyright (c) 2016-present, RxJava Contributors.
   *
   * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in
   * compliance with the License. You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software distributed under the License is
   * distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See
   * the License for the specific language governing permissions and limitations under the License.
   */
  
  package io.reactivex.flowable.internal.operators;
  
  import java.util.concurrent.atomic.AtomicInteger;
  
  import org.reactivestreams.*;
  
  import hu.akarnokd.reactivestreams.extensions.RelaxedSubscriber;
  import io.reactivex.common.exceptions.Exceptions;
  import io.reactivex.common.functions.BooleanSupplier;
  import io.reactivex.flowable.Flowable;
  import io.reactivex.flowable.internal.subscriptions.SubscriptionArbiter;
  
  public final class FlowableRepeatUntil<T> extends AbstractFlowableWithUpstream<T, T> {
      final BooleanSupplier until;
      public FlowableRepeatUntil(Flowable<T> source, BooleanSupplier until) {
          super(source);
          this.until = until;
      }
  
      @Override
      public void subscribeActual(Subscriber<? super T> s) {
          SubscriptionArbiter sa = new SubscriptionArbiter();
          s.onSubscribe(sa);
  
          RepeatSubscriber<T> rs = new RepeatSubscriber<T>(s, until, sa, source);
          rs.subscribeNext();
      }
  
      // FIXME update to a fresh Rsc algorithm
      static final class RepeatSubscriber<T> extends AtomicInteger implements RelaxedSubscriber<T> {
  
          private static final long serialVersionUID = -7098360935104053232L;
  
          final Subscriber<? super T> actual;
          final SubscriptionArbiter sa;
          final Publisher<? extends T> source;
          final BooleanSupplier stop;
          RepeatSubscriber(Subscriber<? super T> actual, BooleanSupplier until, SubscriptionArbiter sa, Publisher<? extends T> source) {
              this.actual = actual;
              this.sa = sa;
              this.source = source;
              this.stop = until;
          }
  
          @Override
          public void onSubscribe(Subscription s) {
              sa.setSubscription(s);
          }
  
          @Override
          public void onNext(T t) {
              actual.onNext(t);
              sa.produced(1L);
          }
          @Override
          public void onError(Throwable t) {
              actual.onError(t);
          }
  
          @Override
          public void onComplete() {
              boolean b;
              try {
                  b = stop.getAsBoolean();
              } catch (Throwable e) {
                  Exceptions.throwIfFatal(e);
                  actual.onError(e);
                  return;
              }
              if (b) {
                  actual.onComplete();
              } else {
                  subscribeNext();
              }
          }
  
          /**
           * Subscribes to the source again via trampolining.
           */
          void subscribeNext() {
              if (getAndIncrement() == 0) {
                  int missed = 1;
                  for (;;) {
                      source.subscribe(this);
  
                      missed = addAndGet(-missed);
                      if (missed == 0) {
                          break;
                      }
                  }
              }
          }
      }
  }
  